Layer ingredients into pie plate on top of puff pastry in the following order: one of the omelets, 4 ounces ham, half of fried the potatoes, 1 cup shredded cheese, remaining potatoes, ham, cheese and 2nd omelet. Top with remaining sheet of puff pastry. Press together edges of both sheets of puff pastry to form a rim; trim off excess. Crimp or flute edges. In small bowl, stir together 1 egg and 1 tablespoon water; brush over puff pastry.